test/java/awt/Paint/ExposeOnEDT.java

rev 14031 : 8160974: [TESTBUG] Mark more headful tests with @key headful.

This is a backport of fe58d505fffd from jdk9. 228/596 hunks apply without
modifications. 16 hunks required manual rework. The remainder were for files
not present in jdk8u.

@@ -26,10 +26,11 @@
 
 import java.awt.*;
 
 /**
  * @test
+ * @key headful
  * @bug 7090424
  * @author Sergey Bylokhov
  * @run main ExposeOnEDT
  */
 public final class ExposeOnEDT {